Image capturing optical lens system

ABSTRACT

An image capturing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element with refractive power has a concave image-side surface. The fourth lens element has refractive power, and at least one surface thereof is aspheric. The fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, and the surfaces thereof are aspheric. The sixth lens element with refractive power has a convex object-side surface, and an image-side surface changing from concave at a paraxial region thereof to convex at a peripheral region thereof, and the surfaces are aspheric.

RELATED APPLICATIONS

The present application is a continuation of the application Ser. No.16/529,756, filed Aug. 1, 2019, which is a continuation of theapplication Ser. No. 16/008,004, filed Jun. 13, 2018, U.S. Pat. No.10,416,417 issued on Sep. 17, 2019, which is a continuation of theapplication Ser. No. 15/196,052, filed Jun. 29, 2016, U.S. Pat. No.10,018,809 issued on Jul. 10, 2018, which is a continuation of theapplication Ser. No. 14/556,249, filed Dec. 1, 2014, U.S. Pat. No.9,405,100 issued on Aug. 2, 2016, which is a continuation of theapplication Ser. No. 13/709,073, filed Dec. 10, 2012, U.S. Pat. No.8,934,178 issued on Jan. 13, 2015, and claims priority to TaiwanApplication Serial Number 101138920, filed Oct. 22, 2012, which areherein incorporated by references.

BACKGROUND Technical Field

The present invention relates to an image capturing optical lens system.More particularly, the present invention relates to a compact imagecapturing optical lens system applicable to electronic products.

Description of Related Art

In recent years, with the popularity of mobile products with camerafunctionalities, the demand of optical lens systems is increasing. Thesensor of a conventional optical lens system is typically a CCD(Charge-Coupled Device) or a CMOS (ComplementaryMetal-Oxide-Semiconductor) sensor. As the advanced semiconductormanufacturing technologies have allowed the pixel size of sensors to bereduced and compact optical lens systems have gradually evolved towardthe field of higher megapixels, there is an increasing demand forcompact optical lens systems featuring better image quality.

A conventional compact optical lens system employed in a portableelectronic product mainly adopts a four-element lens structure or afive-element lens structure such as the one disclosed in U.S. Pat. No.7,869,142 and the one disclosed in U.S. Pat. No. 8,000,031. Due to thepopularity of mobile products with high-end specifications, such assmart phones and PDAs (Personal Digital Assistants), the pixel andimage-quality requirements of the compact optical lens system haveincreased rapidly. However, the conventional four-element lens structureor five-element lens structure cannot satisfy the requirements of thecompact optical lens system.

Although there are optical lens systems with six-element lens structure,such as the one disclosed in U.S. Publication No. 2012/0229917. However,the fifth lens element of this optical lens system is not a meniscuswith stronger curvature and the peripheral field of view can not befocused on the image plane; therefore, it is not favorable for resolvingpower and image quality.

SUMMARY

According to one aspect of the present disclosure, an image capturingoptical lens system includes, in order from an object side to an imageside, a first lens element, a second lens element, a third lens element,a fourth lens element, a fifth lens element, and a sixth lens element.The first lens element with positive refractive power has an object-sidesurface being convex at a paraxial region thereof. The second lenselement has negative refractive power. The third lens element hasrefractive power. The fourth lens element has refractive power, whereinat least one of an object-side surface and an image-side surface of thefourth lens element is aspheric. The fifth lens element with negativerefractive power has an object-side surface being concave and animage-side surface being convex at a paraxial region thereof, whereinthe object-side surface and the image-side surface of the fifth lenselement are aspheric. The sixth lens element with refractive power hasan image-side surface, wherein the image-side surface of the sixth lenselement changes from concave at a paraxial region thereof to convex at aperipheral region thereof, and an object-side surface and the image-sidesurface of the sixth lens element are aspheric. When a curvature radiusof the object-side surface of the first lens element is R1, and acurvature radius of an image-side surface of the first lens element isR2, the following relationship is satisfied:

−3.0<(R1+R2)/(R1−R2)<0.

According to another aspect of the present disclosure, an imagecapturing optical lens system includes, in order from an object side toan image side, a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element, and a sixth lenselement. The first lens element with positive refractive power has anobject-side surface being convex at a paraxial region thereof. Thesecond lens element with refractive power has an image-side surfacebeing concave at a paraxial region thereof. The third lens element hasrefractive power. The fourth lens element with refractive power has animage-side surface being convex at a paraxial region thereof, wherein atleast one of an object-side surface and the image-side surface of thefourth lens element is aspheric. The fifth lens element with negativerefractive power has an object-side surface being concave and animage-side surface being convex at a paraxial region thereof, whereinthe object-side surface and the image-side surface of the fifth lenselement are aspheric. The sixth lens element with refractive power hasan image-side surface, wherein the image-side surface of the sixth lenselement changes from concave at a paraxial region thereof to convex at aperipheral region thereof, and an object-side surface and the image-sidesurface of the sixth lens element are aspheric. When an Abbe number ofthe fifth lens element is V5, and an Abbe number of the sixth lenselement is V6, the following relationship is satisfied:

0.20<V5/V6<0.70.

According to still another aspect of the present disclosure, an imagecapturing optical lens system includes, in order from an object side toan image side, a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element, and a sixth lenselement. The first lens element with positive refractive power has anobject-side surface being convex at a paraxial region thereof. Thesecond lens element with negative refractive power has a concaveimage-side surface. The third lens element has refractive power. Thefourth lens element has refractive power, wherein at least one of anobject-side surface and an image-side surface of the fourth lens elementis aspheric. The fifth lens element with negative refractive power hasan object-side surface being concave and an image-side surface beingconvex at a paraxial region thereof, wherein the object-side surface andthe image-side surface of the fifth lens element are aspheric. The sixthlens element with refractive power has an image-side surface, whereinthe image-side surface of the sixth lens element changes from concave ata paraxial region thereof to convex at a peripheral region thereof, andan object-side surface and the image-side surface of the sixth lenselement are aspheric. When a focal length of the image capturing opticallens system is f, a focal length of the second lens element is f2, afocal length of the fifth lens element is f5, and a curvature radius ofthe image-side surface of the sixth lens element is R12, the followingrelationships are satisfied:

−1.50<f/f5<−0.20; and

−1.0<R12/f2<0.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be more fully understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a schematic view of an image capturing optical lens systemaccording to the 1st embodiment of the present disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 1st embodiment;

FIG. 3 is a schematic view of an image capturing optical lens systemaccording to the 2nd embodiment of the present disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 2nd embodiment;

FIG. 5 is a schematic view of an image capturing optical lens systemaccording to the 3rd embodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 3rd embodiment;

FIG. 7 is a schematic view of an image capturing optical lens systemaccording to the 4th embodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 4th embodiment;

FIG. 9 is a schematic view of an image capturing optical lens systemaccording to the 5th embodiment of the present disclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 5th embodiment;

FIG. 11 is a schematic view of an image capturing optical lens systemaccording to the 6th embodiment of the present disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 6th embodiment;

FIG. 13 is a schematic view of an image capturing optical lens systemaccording to the 7th embodiment of the present disclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 7th embodiment;

FIG. 15 is a schematic view of an image capturing optical lens systemaccording to the 8th embodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 8th embodiment;

FIG. 17 is a schematic view of an image capturing optical lens systemaccording to the 9th embodiment of the present disclosure;

FIG. 18 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 9th embodiment;

FIG. 19 is a schematic view of an image capturing optical lens systemaccording to the 10th embodiment of the present disclosure;

FIG. 20 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 10th embodiment;

FIG. 21 is a schematic view of an image capturing optical lens systemaccording to the 11th embodiment of the present disclosure;

FIG. 22 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 11th embodiment; and

FIG. 23 shows a of the sixth lens element of the image capturing lenssystem as illustrated in FIG. 1.

DETAILED DESCRIPTION

An image capturing optical lens system includes, in order from an objectside to an image side, a first lens element, a second lens element, athird lens element, a fourth lens element, a fifth lens element, and asixth lens element. The image capturing optical lens system can furtherinclude an image sensor located on an image plane.

The first lens element with positive refractive power has an object-sidesurface being convex at a paraxial region thereof, and can have animage-side surface being concave at a paraxial region thereof, so thatthe total track length of the image capturing optical lens system can bereduced by adjusting the positive refractive power of the first lenselement.

The second lens element has negative refractive power, so that theaberration generated from the first lens element can be corrected. Thesecond lens element can have an object-side surface being convex at aparaxial region thereof, and can have an image-side surface beingconcave at a paraxial region thereof, so that the astigmatism of theimage capturing optical lens system can be corrected.

The fourth lens element can have positive refractive power, and can havean image-side surface being convex at a paraxial region thereof.Therefore, it is favorable for reducing the system sensitivity toincrease the manufacturing yield rate.

The fifth lens element with negative refractive power has an object-sidesurface being concave at a paraxial region thereof, and has animage-side surface being convex at a paraxial region thereof. Therefore,the Petzval sum of the image capturing optical lens system can becorrected effectively, so that the peripheral field of view can bebetter focused on the image plane with higher resolving power.

The sixth lens element can have an object-side surface being convex at aparaxial region thereof and has an image-side surface being concave at aparaxial region thereof. Therefore, the principal point of the imagecapturing optical lens system can be positioned away from the imageplane, and the back focal length thereof can be reduced so as to keepthe image capturing optical lens system compact. Furthermore, theimage-side surface of the sixth lens element changes from concave at theparaxial region thereof to convex at a peripheral region thereof, sothat the angle at which the incident light projects onto the imagesensor from the off-axis field can be effectively reduced to increasethe image-sensing efficiency of the image sensor, and the aberration ofthe off-axis field can be further corrected.

When a curvature radius of the object-side surface of the first lenselement is R1, and a curvature radius of the image-side surface of thefirst lens element is R2, the following relationship is satisfied:−3.0<(R1+R2)/(R1-R2)<0. Therefore, the curvatures of the surfaces of thefirst lens element are proper for correcting the spherical aberrationand the astigmatism of the image capturing optical lens system thereof.The total track length of the image capturing optical lens system can bereduced by adjusting the positive refractive power of the first lenselement.

When a curvature radius of the object-side surface of the fifth lenselement is R9, and a curvature radius of the image-side surface of thefifth lens element is R10, the following relationship is satisfied:−0.50<(R9−R10)/(R9+R10)<0. Therefore, the Petzval sum of the imagecapturing optical lens system can be effectively corrected by adjustingthe curvatures of the surfaces of the fifth lens element, and theperipheral field of view can thereby be better focused on the imageplane with higher resolving power. Preferably, the followingrelationship is satisfied: −0.35<(R9−R10)/(R9+R10)<0.

When an Abbe number of the fifth lens element is V5, and an Abbe numberof the sixth lens element is V6, the following relationship issatisfied: 0.20<V5/V6<0.70. Therefore, the chromatic aberration of theimage capturing optical lens system can be corrected.

When a focal length of the image capturing optical lens system is f, anda focal length of the fifth lens element is f5, the followingrelationship is satisfied: −1.50<f/f5<−0.20. Therefore, the Petzval sumof the image capturing optical lens system can be effectively correctedby adjusting the refractive power together with the curvatures of thesurfaces of the fifth lens element, and the peripheral field of view canthereby be better focused on the image plane with higher resolvingpower. Preferably, the following relationship is satisfied:−1.20<f/f5<−0.20.

When a central thickness of the fifth lens element is CT5, and a centralthickness of the sixth lens element is CT6, the following relationshipis satisfied: 0.10<CT5/CT6<0.50. Therefore, the thicknesses of the lenselements are thereby favorable for manufacturing processes and yieldrate; otherwise, the lens elements with an excessively thin thickness oran excessively thick thickness will be easily crackled or deformedduring the manufacturing processes.

When the focal length of the image capturing optical lens system is f,and a focal length of the fourth lens element is f4, the followingrelationship is satisfied: 0.6<f/f4<1.8. Therefore, the distribution ofthe positive refractive power of the image capturing optical lens systemcan be balanced to correct the aberration by properly adjusting therefractive power of the fourth lens element.

When an axial distance between the image-side surface of the sixth lenselement and the image plane is BFL, and an axial distance between theobject-side surface of the first lens element and the image-side surfaceof the sixth lens element is Td, the following relationship issatisfied: 0.15<BFL/Td<0.4. Therefore, it is favorable for keeping theimage capturing optical lens system compact by adjusting the BFL of theimage capturing optical lens system.

When an Abbe number of the first lens element is V1, an Abbe number ofthe second lens element is V2, and the Abbe number of the fifth lenselement is V5, the following relationship is satisfied:0.6<(V2+V5)/V1<1.0. Therefore, it is favorable for correcting thechromatic aberration of the image capturing optical lens system.

When a central thickness of the second lens element is CT2, and an anglebetween a tangent of an inflection point on the image-side surface ofthe sixth lens element and an optical axis is α, the followingrelationship is satisfied: 0 mm<CT2/tan(α)<0.30 mm. Therefore, it isfavorable for effectively reducing the angle at which the incident lightprojects onto the image sensor from the off-axis field to improve theimage-sensing efficiency of the image sensor. Moreover, it is alsofavorable for correcting the aberration of the off-axis field to betterassemble and manufacture the lens elements by properly adjusting thesurface shape of the image-side surface of the sixth lens element andthe central thickness of the second lens element. Preferably, thefollowing relationship is satisfied: 0 mm<CT2/tan(α)<0.15 mm.

When a maximum image height of the image capturing optical lens systemis ImgH (half of a diagonal length of an effective photosensitive areaof the image sensor), and the focal length of the image capturingoptical lens system is f, the following relationship is satisfied:0.72<ImgH/f<1.0. Therefore, it is favorable for keeping the imagecapturing optical lens system compact in order to be applied to thecompact and portable electronic products. When the focal length of theimage capturing optical lens system is f, the focal length of the fourthlens element is f4, the focal length of the fifth lens element is f5,and a focal length of the sixth lens element is f6, the followingrelationship is satisfied: 0.3<(|f/f5|+|f/f6|)/(f/f4)<1.5. Therefore, itis favorable for reducing the sensitivity to increase the manufacturingyield rate by adjusting the refractive power of the fourth lens element,the fifth lens element and the sixth lens element.

When the maximum image height of the image capturing optical lens systemis ImgH, and an axial distance between the object-side surface of thefirst lens element and the image plane is TTL, the followingrelationship is satisfied: TTL/ImgH<1.8. Therefore, it is favorable forkeeping the image capturing optical lens system compact in order to beapplied to the compact and portable electronic products.

When a focal length of the second lens element is f2, and a curvatureradius of the image-side surface of the sixth lens element is R12, thefollowing relationship is satisfied: −1.0<R12/f2<0. Therefore, it isfavorable for correcting the aberration, and the principal point of theimage capturing optical lens system can be positioned away from theimage plane for reducing the back focal length, so that the compact sizeof the image capturing optical lens system can be maintained.

According to the image capturing optical lens system of the presentdisclosure, the lens elements thereof can be made of plastic or glassmaterial. When the lens elements are made of glass material, thedistribution of the refractive power of the image capturing optical lenssystem may be more flexible to design. When the lens elements are madeof plastic material, the manufacturing costs can be effectively reduced.Furthermore, the surfaces of each lens element can be aspheric, so thatit is easier to make the surfaces into non-spherical shapes. As aresult, more controllable variables are obtained, and the aberration isreduced, as well as the number of required lens elements can be reducedwhile constructing an optical system. Therefore, the total track lengthof the image capturing optical lens system can also be reduced.

According to the image capturing optical lens system of the presentdisclosure, each of the object-side surface and the image-side surfaceof every lens element has a paraxial region and a peripheral region. Theparaxial region refers to the region of the surface where light raystravel close to an optical axis and the peripheral region refers to theregion of the surface where light rays travel away from the opticalaxis.

According to the image capturing optical lens system of the presentdisclosure, the image capturing optical lens system can include at leastone stop, such as an aperture stop, a glare stop, or a field stop, etc.Said glare stop or said field stop is allocated for reducing stray lightwhile retaining high image quality. Furthermore, an aperture stop can beconfigured as a front stop or a middle stop. A front stop disposedbetween an object and the first lens element provides a longer distancefrom an exit pupil of the system to the image plane and thereby thegenerated telecentric effect improves the image-sensing efficiency ofthe image sensor. A middle stop disposed between the first lens elementand the image plane is favorable for enlarging the field of view of theimage capturing optical lens system and thereby provides a wider fieldof view for the same.

According to the image capturing optical lens system of the presentdisclosure, the image capturing optical lens system is featured withgood correcting ability and high image quality, and can be applied to 3D(three-dimensional) image capturing applications, in products such asdigital cameras, mobile devices and tablets.

According to the above description of the present disclosure, thefollowing 1st-11th specific embodiments are provided for furtherexplanation.

1st Embodiment

FIG. 1 is a schematic view of an image capturing optical lens systemaccording to the 1st embodiment of the present disclosure. FIG. 2 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 1stembodiment. In FIG. 1, the image capturing optical lens system includes,in order from an object side to an image side, an aperture stop 100, afirst lens element 110, a second lens element 120, a third lens element130, a fourth lens element 140, a fifth lens element 150, a sixth lenselement 160, an IR-cut filter 180, an image plane 170, and an imagesensor 190.

The first lens element 110 with positive refractive power has anobject-side surface 111 being convex at a paraxial region thereof and animage-side surface 112 being concave at a paraxial region thereof. Thefirst lens element 110 is made of plastic material and has theobject-side surface 111 and the image-side surface 112 being bothaspheric.

The second lens element 120 with negative refractive power has anobject-side surface 121 being convex at a paraxial region thereof and animage-side surface 122 being concave at a paraxial region thereof. Thesecond lens element 120 is made of plastic material and has theobject-side surface 121 and the image-side surface 122 being bothaspheric.

The third lens element 130 with negative refractive power has anobject-side surface 131 being convex at a paraxial region thereof and animage-side surface 132 being concave at a paraxial region thereof. Thethird lens element 130 is made of plastic material and has theobject-side surface 131 and the image-side surface 132 being bothaspheric.

The fourth lens element 140 with positive refractive power has anobject-side surface 141 being concave at a paraxial region thereof andan image-side surface 142 being convex at a paraxial region thereof. Thefourth lens element 140 is made of plastic material and has theobject-side surface 141 and the image-side surface 142 being bothaspheric.

The fifth lens element 150 with negative refractive power has anobject-side surface 151 being concave at a paraxial region thereof andan image-side surface 152 being convex at a paraxial region thereof. Thefifth lens element 150 is made of plastic material and has theobject-side surface 151 and the image-side surface 152 being bothaspheric.

The sixth lens element 160 with positive refractive power has anobject-side surface 161 being convex at a paraxial region thereof and animage-side surface 162 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element160 is made of plastic material and has the object-side surface 161 andthe image-side surface 162 being both aspheric.

The IR-cut filter 180 made of glass material is located between thesixth lens element 160 and the image plane 170, and will not affect afocal length of the image capturing optical lens system.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(y)} = {{( {Y^{2}/R} )/( {1 + {sqr{t( {1 - {( {1 + k} ) \times ( {Y/R} )^{2}}} )}}} )} + {\sum\limits_{i}{({Ai}) \times ( Y^{i} )}}}},$

wherein,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from the optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the distance from the point on the curve of the aspheric surface tothe optical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient.

In the image capturing optical lens system according to the 1stembodiment, when a focal length of the image capturing optical lenssystem is f, an f-number of the image capturing optical lens system isFno, and half of a maximal field of view of the image capturing opticallens system is HFOV, these parameters have the following values:

f=4.14 mm;

Fno=2.20; and

HFOV=35.4 degrees.

In the image capturing optical lens system according to the 1stembodiment, when an Abbe number of the first lens element 110 is V1, anAbbe number of the second lens element 120 is V2, an Abbe number of thefifth lens element 150 is V5, and an Abbe number of the sixth lenselement 160 is V6, the following relationships are satisfied:

(V2+V5)/V1=0.83; and

V5/V6=0.417.

In the image capturing optical lens system according to the 1stembodiment, when a central thickness of the fifth lens element 150 isCT5, and a central thickness of the sixth lens element 160 is CT6, thefollowing relationship is satisfied:

CT5/CT6=0.24.

In the image capturing optical lens system according to the 1stembodiment, when a curvature radius of the object-side surface 111 ofthe first lens element 110 is R1, and a curvature radius of theimage-side surface 112 of the first lens element 110 is R2, thefollowing relationship is satisfied:

(R1+R2)/(R1−R2)=−1.07.

In the image capturing optical lens system according to the 1stembodiment, when a curvature radius of the object-side surface 151 ofthe fifth lens element 150 is R9, and a curvature radius of theimage-side surface 152 of the fifth lens element 150 is R10, thefollowing relationship is satisfied:

(R9−R10)/(R9+R10)=−0.17.

In the image capturing optical lens system according to the 1stembodiment, when a focal length of the second lens element 120 is f2,and a curvature radius of the image-side surface 162 of the sixth lenselement 160 is R12, the following relationship is satisfied:

R12/f2=−0.31.

In the image capturing optical lens system according to the 1stembodiment, when the focal length of the image capturing optical lenssystem is f, a focal length of the fourth lens element 140 is f4, afocal length of the fifth lens element 150 is f5, and a focal length ofthe sixth lens element 160 is f6, the following relationships aresatisfied:

f/f4=0.89;

f/f5=−0.61; and

(|f/f5|+|f/f6|)/(f/f4)=0.73.

FIG. 23 shows α of the sixth lens element 160 of the image capturinglens system as illustrated in FIG. 1. In FIG. 23, when an angle betweena tangent of an inflection point on an image-side surface 162 of a sixthlens element 160 and an optical axis is α, and a central thickness ofthe second lens element 120 is CT2, the following relationship issatisfied:

CT2/tan(α)=0.05 mm.

In the image capturing optical lens system according to the 1stembodiment, when an axial distance between the image-side surface 162 ofthe sixth lens element 160 and the image plane 170 is BFL, and an axialdistance between the object-side surface 111 of the first lens element110 and the image-side surface 162 of the sixth lens element 160 is Td,the following relationship is satisfied:

BFL/Td=0.29.

In the image capturing optical lens system according to the 1stembodiment, when a maximum image height of the image capturing opticallens system is ImgH which here is a half of the diagonal length of thephotosensitive area of the image sensor 190 on the image plane 170, thefocal length of the image capturing optical lens system is f, and anaxial distance between the object-side surface 111 of the first lenselement 110 and the image plane 170 is TTL, the following relationshipsare satisfied:

ImgH/f=0.724; and TTL/ImgH=1.70.

The detailed optical data of the 1st embodiment are shown in Table 1,and the aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 4.14 mm, Fno = 2.20, HFOV = 35.4 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # length 0 ObjectPlano Infinity 1 Ape. Stop Plano −0.283 2 Lens 1 1.688 (ASP) 0.523Plastic 1.544 55.9 3.20 3 47.745 (ASP) 0.036 4 Lens 2 3.044 (ASP) 0.240Plastic 1.640 23.3 −6.34 5 1.685 (ASP) 0.380 6 Lens 3 7.907 (ASP) 0.274Plastic 1.544 55.9 −25.07 7 4.945 (ASP) 0.186 8 Lens 4 −205.400 (ASP)0.360 Plastic 1.544 55.9 4.64 9 −2.494 (ASP) 0.347 10 Lens 5 −0.818(ASP) 0.300 Plastic 1.640 23.3 −6.84 11 −1.150 (ASP) 0.072 12 Lens 62.293 (ASP) 1.229 Plastic 1.544 55.9 95.61 13 1.946 (ASP) 0.500 14IR-cut filter Plano 0.300 Glass 1.517 64.2 — 15 Plano 0.449 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 2 Aspheric Coefficients Surface # 2 3 4 5 6 7 k=  1.8655E−01 5.0000E+00 −2.0784E+01 −5.0621E+00   0.0000E+00  0.0000E+00 A4=−6.1899E−04 −4.5527E−02 −7.1197E−02 2.5381E−03 −7.0538E−02 −7.8575E−02A6=  2.8358E−02  1.2620E−01  1.2670E−01 4.2100E−02 −4.2775E−02−1.0851E−02 A8= −5.0099E−02 −1.0849E−01 −3.6051E−02 9.4901E−02 6.0982E−02 −2.6489E−02 A10= −3.4127E−03 −1.1151E−02 −1.2216E−01−2.2870E−01  −4.2446E−02  1.4271E−03 A12=  9.9599E−02  4.2875E−02 4.4865E−02 1.5329E−01 −4.0004E−11 −2.6097E−10 A14= −7.7512E−02−3.6527E−02  1.5158E−02 −2.4257E−02  — — Surface # 8 9 10 11 12 13 k=−4.0000E+01  1.6416E+00 −3.7855E+00 −8.1718E−01 −3.1624E+01 −9.1133E+00A4= −9.7160E−02 −4.3991E−02 −4.9566E−02  1.3509E−01 −1.2831E−01−5.1858E−02 A6= −5.6079E−03 −1.7664E−02 −1.4184E−02 −3.7856E−02 7.0118E−02  2.0398E−02 A8=  6.6760E−03  2.7241E−02  1.2088E−01 1.7679E−02 −4.1873E−02 −8.2739E−03 A10= −3.6560E−02  3.6468E−02−5.2829E−02  8.4334E−03  2.0999E−02  2.2506E−03 A12= −8.1389E−03−3.5812E−03 −1.0632E−02 −3.2045E−03 −5.8979E−03 −3.8544E−04 A14= 9.1601E−02 −6.5876E−03  4.8246E−03 −2.5396E−03  8.2208E−04  3.6567E−05A16= −4.8470E−02 —  4.0110E−04  8.1636E−04 −4.4862E−05 −1.4339E−06

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-16 represent the surfacessequentially arranged from the object-side to the image-side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A1-A16 represent the asphericcoefficients ranging from the 1st order to the 16th order. Thisinformation related to Table 1 and Table 2 applies also to the Tablesfor the remaining embodiments, and so an explanation in this regard willnot be provided again.

2nd Embodiment

FIG. 3 is a schematic view of an image capturing optical lens systemaccording to the 2nd embodiment of the present disclosure. FIG. 4 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 2ndembodiment. In FIG. 3, the image capturing optical lens system includes,in order from an object side to an image side, a first lens element 210,an aperture stop 200, a second lens element 220, a third lens element230, a fourth lens element 240, a fifth lens element 250, a sixth lenselement 260, an IR-cut filter 280, an image plane 270, and an imagesensor 290.

The first lens element 210 with positive refractive power has anobject-side surface 211 being convex at a paraxial region thereof and animage-side surface 212 being concave at a paraxial region thereof. Thefirst lens element 210 is made of plastic material and has theobject-side surface 211 and the image-side surface 212 being bothaspheric.

The second lens element 220 with negative refractive power has anobject-side surface 221 being convex at a paraxial region thereof and animage-side surface 222 being concave at a paraxial region thereof. Thesecond lens element 220 is made of plastic material and has theobject-side surface 221 and the image-side surface 222 being bothaspheric.

The third lens element 230 with negative refractive power has anobject-side surface 231 being convex at a paraxial region thereof and animage-side surface 232 being concave at a paraxial region thereof. Thethird lens element 230 is made of plastic material and has theobject-side surface 231 and the image-side surface 232 being bothaspheric.

The fourth lens element 240 with positive refractive power has anobject-side surface 241 being convex at a paraxial region thereof and animage-side surface 242 being convex at a paraxial region thereof. Thefourth lens element 240 is made of plastic material and has theobject-side surface 241 and the image-side surface 242 being bothaspheric.

The fifth lens element 250 with negative refractive power has anobject-side surface 251 being concave at a paraxial region thereof andan image-side surface 252 being convex at a paraxial region thereof. Thefifth lens element 250 is made of plastic material and has theobject-side surface 251 and the image-side surface 252 being bothaspheric.

The sixth lens element 260 with positive refractive power has anobject-side surface 261 being convex at a paraxial region thereof and animage-side surface 262 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element260 is made of plastic material and has the object-side surface 261 andthe image-side surface 262 being both aspheric.

The IR-cut filter 280 made of glass material is located between thesixth lens element 260 and the image plane 270, and will not affect afocal length of the image capturing optical lens system.

The detailed optical data of the 2nd embodiment are shown in Table 3,and the aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 3.64 mm, Fno = 2.00, HFOV = 39.0 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # length 0 ObjectPlano Infinity 1 Lens 1 2.153 (ASP) 0.458 Plastic 1.572 58.7 3.79 2335.570 (ASP) 0.012 3 Ape. Stop Plano 0.016 4 Lens 2 2.155 (ASP) 0.240Plastic 1.634 23.8 −7.49 5 1.418 (ASP) 0.337 6 Lens 3 5.467 (ASP) 0.329Plastic 1.544 55.9 −19.12 7 3.508 (ASP) 0.105 8 Lens 4 10.749 (ASP)0.491 Plastic 1.544 55.9 3.07 9 −1.949 (ASP) 0.300 10 Lens 5 −0.760(ASP) 0.285 Plastic 1.634 23.8 −4.25 11 −1.214 (ASP) 0.084 12 Lens 61.725 (ASP) 1.268 Plastic 1.535 56.3 12.39 13 1.736 (ASP) 0.500 14IR-cut filter Plano 0.200 Glass 1.517 64.2 — 15 Plano 0.395 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 4 Aspheric Coefficients Surface # 1 2 4 5 6 7 k= 2.4457E−01−2.0000E+01 −1.3449E+01 −4.3098E+00 −1.4316E+01 −1.0637E+01 A4=−3.5922E−03  −3.0418E−02 −2.7734E−02 −2.1105E−02 −7.5590E−02 −7.4219E−02A6= 3.8748E−02  1.2918E−01  6.5777E−02  3.8720E−02 −4.3505E−02 4.1101E−02 A8= −7.2214E−02  −1.6441E−01 −1.2333E−02  7.6934E−02 3.6620E−02 −8.3615E−02 A10= 4.6314E−03  2.8122E−02 −1.4011E−01−2.2788E−01  1.3003E−02  1.1203E−02 A12= 9.9599E−02  4.2875E−02 4.4865E−02  1.5329E−01 −5.9070E−11  1.5762E−03 A14= −7.7512E−02 −3.6527E−02  1.5158E−02 −2.4257E−02 — — Surface # 8 9 10 11 12 13 k=−2.0000E+01 1.0656E+00 −3.7586E+00 −8.4885E−01 −2.0000E+01 −6.7333E+00A4= −8.1612E−02 −2.9725E−02  −4.8386E−02  1.3364E−01 −1.2827E−01−4.9930E−02 A6=  3.7678E−02 −1.3289E−03  −2.1777E−02 −2.9464E−02 7.0279E−02  2.0733E−02 A8=  2.9213E−02 2.3233E−02  1.2848E−01 1.5336E−02 −4.1651E−02 −8.2814E−03 A10= −7.4599E−02 3.7969E−02−5.0342E−02  7.8336E−03  2.0986E−02  2.2581E−03 A12= −4.2027E−021.7118E−03 −1.2548E−02 −3.0509E−03 −5.9073E−03 −3.8625E−04 A14= 1.1763E−01 −6.0820E−03   4.0294E−03 −2.4660E−03  8.2073E−04  3.6257E−05A16= −4.8470E−02 —  1.3739E−03  7.9323E−04 −4.4360E−05 −1.3893E−06

In the image capturing optical lens system according to the 2ndembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment. Moreover, these parameterscan be calculated from Table 3 and Table 4 as the following values andsatisfy the following relationships:

f (mm) 3.64 R12/f2 −0.23 Fno 2.00 f/f4 1.18 HFOV (deg.) 39.0 f/f5 −0.86(V2 + V5)/V1 0.81 (|f/f5| + |f/f6|)/(f/f4) 0.97 V5/V6 0.423 CT2/tan(α)(mm) 0.06 CT5/CT6 0.22 BFL/Td 0.26 (R1 + R2)/(R1 − R2) −1.01 ImgH/f0.824 (R9 − R10)/(R9 + R10) −0.23 TTL/ImgH 1.65

3rd Embodiment

FIG. 5 is a schematic view of an image capturing optical lens systemaccording to the 3rd embodiment of the present disclosure. FIG. 6 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 3rdembodiment. In FIG. 5, the image capturing optical lens system includes,in order from an object side to an image side, an aperture stop 300, afirst lens element 310, a second lens element 320, a third lens element330, a fourth lens element 340, a fifth lens element 350, a sixth lenselement 360, an IR-cut filter 380, an image plane 370, and an imagesensor 390.

The first lens element 310 with positive refractive power has anobject-side surface 311 being convex at a paraxial region thereof and animage-side surface 312 being convex at a paraxial region thereof. Thefirst lens element 310 is made of plastic material and has theobject-side surface 311 and the image-side surface 312 being bothaspheric.

The second lens element 320 with negative refractive power has anobject-side surface 321 being convex at a paraxial region thereof and animage-side surface 322 being concave at a paraxial region thereof. Thesecond lens element 320 is made of plastic material and has theobject-side surface 321 and the image-side surface 322 being bothaspheric.

The third lens element 330 with negative refractive power has anobject-side surface 331 being convex at a paraxial region thereof and animage-side surface 332 being concave at a paraxial region thereof. Thethird lens element 330 is made of plastic material and has theobject-side surface 331 and the image-side surface 332 being bothaspheric.

The fourth lens element 340 with positive refractive power has anobject-side surface 341 being convex at a paraxial region thereof and animage-side surface 342 being convex at a paraxial region thereof. Thefourth lens element 340 is made of plastic material and has theobject-side surface 341 and the image-side surface 342 being bothaspheric.

The fifth lens element 350 with negative refractive power has anobject-side surface 351 being concave at a paraxial region thereof andan image-side surface 352 being convex at a paraxial region thereof. Thefifth lens element 350 is made of plastic material and has theobject-side surface 351 and the image-side surface 352 being bothaspheric.

The sixth lens element 360 with positive refractive power has anobject-side surface 361 being convex at a paraxial region thereof and animage-side surface 362 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element360 is made of plastic material and has the object-side surface 361 andthe image-side surface 362 being both aspheric.

The IR-cut filter 380 made of glass material is located between thesixth lens element 360 and the image plane 370, and will not affect afocal length of the image capturing optical lens system. The detailedoptical data of the 3rd embodiment are shown in Table 5, and theaspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 4.20 mm, Fno = 2.07, HFOV = 37.6 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # length 0 ObjectPlano Infinity 1 Ape. Stop Plano −0.217 2 Lens 1 2.370 (ASP) 0.483Plastic 1.543 56.5 3.96 3 −21.803 (ASP) 0.050 4 Lens 2 2.747 (ASP) 0.240Plastic 1.650 21.4 −7.65 5 1.708 (ASP) 0.338 6 Lens 3 8.160 (ASP) 0.461Plastic 1.543 56.5 −39.26 7 5.785 (ASP) 0.197 8 Lens 4 305.985 (ASP)0.456 Plastic 1.543 56.5 4.22 9 −2.310 (ASP) 0.386 10 Lens 5 −0.914(ASP) 0.285 Plastic 1.640 23.3 −7.70 11 −1.258 (ASP) 0.192 12 Lens 61.715 (ASP) 0.900 Plastic 1.543 56.5 135.54 13 1.431 (ASP) 0.800 14IR-cut filter Plano 0.300 Glass 1.517 64.2 — 15 Plano 0.400 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 6 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= 2.5381E−01−2.0000E+01 −1.9708E+01 −5.5454E+00  2.8590E+00 −1.2693E+01 A4=−4.3261E−04  −3.7924E−04 −1.8028E−02 −3.3774E−02 −5.5935E−02 −6.6442E−02A6= 1.0703E−02  6.4702E−02  2.8578E−02  1.8018E−02 −1.9881E−02 1.9509E−02 A8= −1.6978E−02  −8.8112E−02 −1.8991E−02  3.8009E−02 1.5339E−02 −4.5863E−02 A10= 7.9623E−05  3.3050E−02 −3.9010E−02−9.9688E−02  5.6330E−03  6.6107E−03 A12= 2.8188E−02  6.1037E−03 1.7352E−02  5.4569E−02 −6.2692E−04  4.0076E−03 A14= −2.1606E−02 −1.5862E−02 −8.7443E−03 −8.0099E−03 — — Surface # 8 9 10 11 12 13 k=−2.0000E+01 1.1076E+00 −3.7451E+00 −7.8937E−01 −1.2153E+01 −5.8456E+00A4= −7.6005E−02 −3.0540E−02  −3.9649E−02  1.0498E−01 −1.1171E−01−5.3577E−02 A6= −3.8014E−03 −5.8796E−03  −1.5555E−02 −1.9811E−02 4.2713E−02  1.5409E−02 A8=  1.2471E−02 8.1726E−03  6.4762E−02 8.4971E−03 −2.1124E−02 −4.5079E−03 A10= −2.7696E−02 1.4417E−02−2.1115E−02  3.4516E−03  8.9390E−03  9.5885E−04 A12= −1.1912E−027.0797E−04 −4.0215E−03 −1.0628E−03 −2.0697E−03 −1.3318E−04 A14= 3.4966E−02 −9.5575E−04   1.2756E−03 −7.0899E−04  2.3709E−04  1.0479E−05A16= −1.2080E−02 —  2.4717E−04  1.8710E−04 −1.0734E−05 −3.5225E−07

In the image capturing optical lens system according to the 3rdembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment. Moreover, these parameterscan be calculated from Table 5 and Table 6 as the following values andsatisfy the following relationships:

f (mm) 4.20 R12/f2 −0.19 Fno 2.07 f/f4 1.00 HFOV (deg.) 37.6 f/f5 −0.55(V2 + V5)/V1 0.79 (|f/f5| + |f/f6|)/(f/f4) 0.58 V5/V6 0.412 CT2/tan(α)(mm) 0.07 CT5/CT6 0.32 BFL/Td 0.35 (R1 + R2)/(R1 − R2) −0.80 ImgH/f0.785 (R9 − R10)/(R9 + R10) −0.16 TTL/ImgH 1.63

4th Embodiment

FIG. 7 is a schematic view of an image capturing optical lens systemaccording to the 4th embodiment of the present disclosure. FIG. 8 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 4thembodiment. In FIG. 7, the image capturing optical lens system includes,in order from an object side to an image side, an aperture stop 400, afirst lens element 410, a second lens element 420, a third lens element430, a fourth lens element 440, a fifth lens element 450, a sixth lenselement 460, an IR-cut filter 480, an image plane 470, and an imagesensor 490.

The first lens element 410 with positive refractive power has anobject-side surface 411 being convex at a paraxial region thereof and animage-side surface 412 being concave at a paraxial region thereof. Thefirst lens element 410 is made of plastic material and has theobject-side surface 411 and the image-side surface 412 being bothaspheric.

The second lens element 420 with negative refractive power has anobject-side surface 421 being convex at a paraxial region thereof and animage-side surface 422 being concave at a paraxial region thereof. Thesecond lens element 420 is made of plastic material and has theobject-side surface 421 and the image-side surface 422 being bothaspheric.

The third lens element 430 with positive refractive power has anobject-side surface 431 being convex at a paraxial region thereof and animage-side surface 432 being concave at a paraxial region thereof. Thethird lens element 430 is made of plastic material and has theobject-side surface 431 and the image-side surface 432 being bothaspheric.

The fourth lens element 440 with positive refractive power has anobject-side surface 441 being concave at a paraxial region thereof andan image-side surface 442 being convex at a paraxial region thereof. Thefourth lens element 440 is made of plastic material and has theobject-side surface 441 and the image-side surface 442 being bothaspheric.

The fifth lens element 450 with negative refractive power has anobject-side surface 451 being concave at a paraxial region thereof andan image-side surface 452 being convex at a paraxial region thereof. Thefifth lens element 450 is made of plastic material and has theobject-side surface 451 and the image-side surface 452 being bothaspheric.

The sixth lens element 460 with negative refractive power has anobject-side surface 461 being convex at a paraxial region thereof and animage-side surface 462 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element460 is made of plastic material and has the object-side surface 461 andthe image-side surface 462 being both aspheric.

The IR-cut filter 480 made of glass material is located between thesixth lens element 460 and the image plane 470, and will not affect afocal length of the image capturing optical lens system.

The detailed optical data of the 4th embodiment are shown in Table 7,and the aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f = 3.52 mm, Fno = 2.15, HFOV = 39.0 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # length 0 ObjectPlano Infinity 1 Ape. Stop Plano −0.240 2 Lens 1 1.526 (ASP) 0.434Plastic 1.544 55.9 3.78 3 5.319 (ASP) 0.031 4 Lens 2 3.101 (ASP) 0.220Plastic 1.640 23.3 −6.73 5 1.753 (ASP) 0.267 6 Lens 3 3.404 (ASP) 0.428Plastic 1.535 56.3 17.00 7 5.205 (ASP) 0.230 8 Lens 4 −27.849 (ASP)0.466 Plastic 1.535 56.3 3.47 9 −1.749 (ASP) 0.251 10 Lens 5 −0.973(ASP) 0.260 Plastic 1.640 23.3 −12.30 11 −1.226 (ASP) 0.328 12 Lens 61.860 (ASP) 0.628 Plastic 1.544 55.9 −5.21 13 0.990 (ASP) 0.500 14IR-cut filter Plano 0.150 Glass 1.517 64.2 — 15 Plano 0.303 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 8 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= 2.7915E−01−2.4936E+01 −2.7594E+01 −5.8473E+00  −9.8578E+00 −2.1118E+00 A4=2.4313E−04 −3.9606E−02 −5.3828E−02 1.8334E−02 −7.0035E−02 −9.1836E−02A6= 3.1291E−02  1.5890E−01  1.6355E−01 1.1594E−01  2.1129E−02−3.2061E−04 A8= −5.6249E−02  −1.7755E−01 −1.2411E−01 4.0035E−02−2.9000E−02 −8.2744E−02 A10= −7.1236E−03  −4.4157E−02 −1.8261E−01−2.8123E−01   1.9761E−02  2.5430E−02 A12= 1.7068E−01  7.5059E−02 7.6292E−02 2.6344E−01 −2.5108E−05  5.1347E−06 A14= −1.4769E−01 −6.9236E−02  2.7542E−02 −4.5915E−02  — — Surface # 8 9 10 11 12 13 k=−1.0000E+00  5.1039E−01 −4.1329E+00 −7.0200E−01 −2.6121E+01 −6.4224E+00A4= −1.0058E−01 −2.9673E−02 −9.2923E−02  1.4126E−01 −1.8872E−01−7.1095E−02 A6= −1.9692E−02 −2.4332E−02 −3.4662E−02 −5.1905E−02 9.2722E−02  2.9091E−02 A8=  1.7002E−02  2.1407E−02  1.7437E−01 1.9044E−02 −5.8075E−02 −1.1727E−02 A10= −9.5874E−02  5.2055E−02−7.6455E−02  1.3553E−02  3.2738E−02  3.4867E−03 A12= −3.2940E−02−4.6551E−03 −1.4777E−02 −4.4324E−03 −1.0149E−02 −6.6684E−04 A14= 2.0100E−01 −1.0881E−02  9.5556E−03 −4.5447E−03  1.5541E−03  6.9187E−05A16= −1.0135E−01 — −1.7410E−03  1.5160E−03 −9.3289E−05 −2.8417E−06

In the image capturing optical lens system according to the 4thembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment. Moreover, these parameterscan be calculated from Table 7 and Table 8 as the following values andsatisfy the following relationships:

f (mm) 3.52 R12/f2 −0.15 Fno 2.15 f/f4 1.02 HFOV (deg.) 39.0 f/f5 −0.29(V2 + V5)/V1 0.83 (|f/f5| + |f/f6|)/(f/f4) 0.95 V5/V6 0.417 CT2/tan(α)(mm) 0.07 CT5/CT6 0.41 BFL/Td 0.25 (R1 + R2)/(R1 − R2) −1.80 ImgH/f0.810 (R9 − R10)/(R9 + R10) −0.12 TTL/ImgH 1.56

5th Embodiment

FIG. 9 is a schematic view of an image capturing optical lens systemaccording to the 5th embodiment of the present disclosure. FIG. 10 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 5thembodiment. In FIG. 9, the image capturing optical lens system includes,in order from an object side to an image side, an aperture stop 500, afirst lens element 510, a second lens element 520, a third lens element530, a fourth lens element 540, a fifth lens element 550, a sixth lenselement 560, an IR-cut filter 580, an image plane 570, and an imagesensor 590.

The first lens element 510 with positive refractive power has anobject-side surface 511 being convex at a paraxial region thereof and animage-side surface 512 being convex at a paraxial region thereof. Thefirst lens element 510 is made of plastic material and has theobject-side surface 511 and the image-side surface 512 being bothaspheric.

The second lens element 520 with negative refractive power has anobject-side surface 521 being convex at a paraxial region thereof and animage-side surface 522 being concave at a paraxial region thereof. Thesecond lens element 520 is made of plastic material and has theobject-side surface 521 and the image-side surface 522 being bothaspheric.

The third lens element 530 with negative refractive power has anobject-side surface 531 being convex at a paraxial region thereof and animage-side surface 532 being concave at a paraxial region thereof. Thethird lens element 530 is made of plastic material and has theobject-side surface 531 and the image-side surface 532 being bothaspheric.

The fourth lens element 540 with positive refractive power has anobject-side surface 541 being convex at a paraxial region thereof and animage-side surface 542 being convex at a paraxial region thereof. Thefourth lens element 540 is made of plastic material and has theobject-side surface 541 and the image-side surface 542 being bothaspheric.

The fifth lens element 550 with negative refractive power has anobject-side surface 551 being concave at a paraxial region thereof andan image-side surface 552 being convex at a paraxial region thereof. Thefifth lens element 550 is made of plastic material and has theobject-side surface 551 and the image-side surface 552 being bothaspheric.

The sixth lens element 560 with negative refractive power has anobject-side surface 561 being convex at a paraxial region thereof and animage-side surface 562 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element560 is made of plastic material and has the object-side surface 561 andthe image-side surface 562 being both aspheric.

The IR-cut filter 580 made of glass material is located between thesixth lens element 560 and the image plane 570, and will not affect afocal length of the image capturing optical lens system. The detailedoptical data of the 5th embodiment are shown in Table 9, and theaspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 3.53 mm, Fno = 2.28, HFOV = 38.5 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # length 0 ObjectPlano Infinity 1 Ape. Stop Plano −0.125 2 Lens 1 2.098 (ASP) 0.412Plastic 1.570 57.5 3.07 3 −9.769 (ASP) 0.040 4 Lens 2 3.157 (ASP) 0.230Plastic 1.640 23.3 −5.46 5 1.611 (ASP) 0.236 6 Lens 3 7.409 (ASP) 0.439Plastic 1.544 55.9 −147.68 7 6.642 (ASP) 0.167 8 Lens 4 72.487 (ASP)0.354 Plastic 1.544 55.9 3.62 9 −2.019 (ASP) 0.292 10 Lens 5 −0.951(ASP) 0.280 Plastic 1.633 23.4 −6.64 11 −1.369 (ASP) 0.199 12 Lens 61.577 (ASP) 0.803 Plastic 1.544 55.9 −20.65 13 1.134 (ASP) 0.600 14IR-cut filter Plano 0.200 Glass 1.517 64.2 — 15 Plano 0.300 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 10 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= −2.9182E−02−4.0000E+01  −3.9740E+01 −8.7375E+00 −2.4782E−01 −1.0194E+01 A4=−6.1716E−03 3.7462E−03 −3.0152E−02 −2.1965E−02 −1.0134E−01 −1.0225E−01A6= −1.9011E−02 9.0896E−02  1.3569E−01  2.8108E−02 −3.5725E−02−7.1141E−03 A8=  2.5131E−02 −2.1060E−01  −1.8667E−01  7.4668E−02 1.1420E−01 −7.4579E−02 A10= −1.0473E−01 2.9488E−02 −1.0551E−01−3.2137E−01  1.2721E−02  2.1331E−02 A12=  1.7110E−01 7.3654E−02 7.7073E−02  2.6333E−01 −1.9191E−02  1.2521E−02 A14= −1.4692E−01−6.9236E−02   2.8732E−02 −4.5979E−02 — — Surface # 8 9 10 11 12 13 k= 0.0000E+00  9.0561E−01 −5.5036E+00 −7.1634E−01 −1.5362E+01 −6.1704E+00A4= −1.1202E−01 −3.1565E−02 −6.6246E−02  1.4768E−01 −1.7629E−01−7.4355E−02 A6= −1.0862E−02 −2.2451E−02 −3.0597E−02 −5.5223E−02 9.2042E−02  3.0461E−02 A8= −2.6754E−03  3.7699E−02  1.5841E−01 2.0759E−02 −5.7974E−02 −1.2184E−02 A10= −8.2421E−02  5.9365E−02−8.0997E−02  1.3723E−02  3.2714E−02  3.5168E−03 A12= −1.8457E−02−4.3189E−03 −1.0397E−02 −4.6091E−03 −1.0165E−02 −6.6148E−04 A14= 1.8390E−01 −7.3347E−03  1.2640E−02 −4.5883E−03  1.5483E−03  6.9342E−05A16= −1.0137E−01 − −2.8705E−03  1.5255E−03 −9.1738E−05 −2.9676E−06

In the image capturing optical lens system according to the 5thembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment. Moreover, these parameterscan be calculated from Table 9 and Table 10 as the following values andsatisfy the following relationships:

f (mm) 3.53 R12/f2 −0.21 Fno 2.28 f/f4 0.98 HFOV (deg.) 38.5 f/f5 −0.53(V2 + V5)/V1 0.81 (|f/f5| + |f/f6|)/(f/f4) 0.72 V5/V6 0.419 CT2/tan(α)(mm) 0.07 CT5/CT6 0.35 BFL/Td 0.30 (R1 + R2)/(R1 − R2) −0.65 ImgH/f0.809 (R9 − R10)/(R9 + R10) −0.18 TTL/ImgH 1.57

6th Embodiment

FIG. 11 is a schematic view of an image capturing optical lens systemaccording to the 6th embodiment of the present disclosure. FIG. 12 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 6thembodiment. In FIG. 11, the image capturing optical lens systemincludes, in order from an object side to an image side, an aperturestop 600, a first lens element 610, a second lens element 620, a thirdlens element 630, a fourth lens element 640, a fifth lens element 650, asixth lens element 660, an IR-cut filter 680, an image plane 670, and animage sensor 690.

The first lens element 610 with positive refractive power has anobject-side surface 611 being convex at a paraxial region thereof and animage-side surface 612 being concave at a paraxial region thereof. Thefirst lens element 610 is made of plastic material and has theobject-side surface 611 and the image-side surface 612 being bothaspheric.

The second lens element 620 with negative refractive power has anobject-side surface 621 being convex at a paraxial region thereof and animage-side surface 622 being concave at a paraxial region thereof. Thesecond lens element 620 is made of plastic material and has theobject-side surface 621 and the image-side surface 622 being bothaspheric.

The third lens element 630 with positive refractive power has anobject-side surface 631 being convex at a paraxial region thereof and animage-side surface 632 being concave at a paraxial region thereof. Thethird lens element 630 is made of plastic material and has theobject-side surface 631 and the image-side surface 632 being bothaspheric.

The fourth lens element 640 with positive refractive power has anobject-side surface 641 being concave at a paraxial region thereof andan image-side surface 642 being convex at a paraxial region thereof. Thefourth lens element 640 is made of plastic material and has theobject-side surface 641 and the image-side surface 642 being bothaspheric.

The fifth lens element 650 with negative refractive power has anobject-side surface 651 being concave at a paraxial region thereof andan image-side surface 652 being convex at a paraxial region thereof. Thefifth lens element 650 is made of plastic material and has theobject-side surface 651 and the image-side surface 652 being bothaspheric.

The sixth lens element 660 with positive refractive power has anobject-side surface 661 being convex at a paraxial region thereof and animage-side surface 662 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element660 is made of plastic material and has the object-side surface 661 andthe image-side surface 662 being both aspheric.

The IR-cut filter 680 made of glass material is located between thesixth lens element 660 and the image plane 670, and will not affect afocal length of the image capturing optical lens system.

The detailed optical data of the 6th embodiment are shown in Table 11,and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 3.62 mm, Fno = 2.35, HFOV = 37.8 deg.Surface Curvature Focal # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.148 2 Lens 1 1.962 (ASP)0.418 Plastic 1.544 55.9 4.11 3 14.881 (ASP) 0.050 4 Lens 2 2.961 (ASP)0.240 Plastic 1.640 23.3 −6.66 5 1.692 (ASP) 0.185 6 Lens 3 3.007 (ASP)0.362 Plastic 1.544 55.9 14.05 7 4.745 (ASP) 0.321 8 Lens 4 −12.116(ASP) 0.435 Plastic 1.544 55.9 4.08 9 −1.900 (ASP) 0.300 10 Lens 5−0.916 (ASP) 0.250 Plastic 1.640 23.3 −5.53 11 −1.367 (ASP) 0.128 12Lens 6 1.310 (ASP) 0.787 Plastic 1.530 55.8 70.78 13 1.075 (ASP) 0.60014 IR-cut filter Plano 0.200 Glass 1.517 64.2 — 15 Plano 0.426 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 12 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= 4.6664E−01−4.0000E+01 −3.0098E+01 −7.5608E+00 −4.8799E+00  1.9273E+00 A4=−2.1799E−04  −5.3426E−02 −6.9007E−02 −3.8393E−02 −9.5062E−02 −9.2795E−02A6= 1.3945E−02  1.7055E−01  6.3894E−02  9.3340E−03 −3.7983E−02−3.5163E−02 A8= 5.2083E−04 −2.5636E−01 −6.9036E−02  7.0595E−02 7.2969E−02 −6.9952E−02 A10= −7.4073E−02  −3.8467E−02 −3.1084E−01−3.5385E−01 −1.9872E−02  5.1614E−02 A12= 1.7110E−01  7.3654E−02 7.7073E−02  2.6333E−01  1.8507E−02  3.6115E−02 A14= −1.4692E−01 −6.9236E−02  2.8732E−02 −4.5979E−02 — — Surface # 8 9 10 11 12 13 k=−1.0000E+00  1.0135E+00 −6.1714E+00 −6.3844E−01 −1.2851E+01 −5.3345E+00A4= −8.7034E−02 −4.5830E−02 −1.0529E−01  1.3602E−01 −1.7692E−01−8.0147E−02 A6= −2.2875E−02 −4.7613E−03 −2.1382E−02 −6.0425E−02 9.2596E−02  3.3015E−02 A8=  2.4491E−02  3.7893E−02  1.6663E−01 2.3794E−02 −5.8046E−02 −1.2613E−02 A10= −7.1043E−02  5.4155E−02−7.8022E−02  1.4800E−02  3.2694E−02  3.5304E−03 A12= −2.0087E−02−6.8905E−03 −1.2281E−02 −4.3372E−03 −1.0164E−02 −6.5395E−04 A14= 1.8513E−01 −1.0180E−02  1.1470E−02 −4.6163E−03  1.5482E−03  6.9323E−05A16= −1.0137E−01 — −1.7129E−03  1.4470E−03 −9.1665E−05 −3.0797E−06

In the image capturing optical lens system according to the 6thembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment. Moreover, these parameterscan be calculated from Table 11 and Table 12 as the following values andsatisfy the following relationships:

f (mm) 3.62 R12/f2 −0.16 Fno 2.35 f/f4 0.89 HFOV (deg.) 37.8 f/f5 −0.65(V2 + V5)/V1 0.83 (|f/f5| + |f/f6|)/(f/f4) 0.80 V5/V6 0.418 CT2/tan(α)(mm) 0.07 CT5/CT6 0.32 BFL/Td 0.33 (R1 + R2)/(R1 − R2) −1.30 ImgH/f0.789 (R9 − R10)/(R9 + R10) −0.20 TTL/ImgH 1.62

7th Embodiment

FIG. 13 is a schematic view of an image capturing optical lens systemaccording to the 7th embodiment of the present disclosure. FIG. 14 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 7thembodiment. In FIG. 13, the image capturing optical lens systemincludes, in order from an object side to an image side, an aperturestop 700, a first lens element 710, a stop 701, a second lens element720, a third lens element 730, a fourth lens element 740, a fifth lenselement 750, a sixth lens element 760, an IR-cut filter 780, an imageplane 770, and an image sensor 790.

The first lens element 710 with positive refractive power has anobject-side surface 711 being convex at a paraxial region thereof and animage-side surface 712 being concave at a paraxial region thereof. Thefirst lens element 710 is made of plastic material and has theobject-side surface 711 and the image-side surface 712 being bothaspheric.

The second lens element 720 with negative refractive power has anobject-side surface 721 being concave at a paraxial region thereof andan image-side surface 722 being concave at a paraxial region thereof.The second lens element 720 is made of plastic material and has theobject-side surface 721 and the image-side surface 722 being bothaspheric.

The third lens element 730 with positive refractive power has anobject-side surface 731 being convex at a paraxial region thereof and animage-side surface 732 being convex at a paraxial region thereof. Thethird lens element 730 is made of plastic material and has theobject-side surface 731 and the image-side surface 732 being bothaspheric.

The fourth lens element 740 with positive refractive power has anobject-side surface 741 being concave at a paraxial region thereof andan image-side surface 742 being convex at a paraxial region thereof. Thefourth lens element 740 is made of plastic material and has theobject-side surface 741 and the image-side surface 742 being bothaspheric.

The fifth lens element 750 with negative refractive power has anobject-side surface 751 being concave at a paraxial region thereof andan image-side surface 752 being convex at a paraxial region thereof. Thefifth lens element 750 is made of plastic material and has theobject-side surface 751 and the image-side surface 752 being bothaspheric.

The sixth lens element 760 with negative refractive power has anobject-side surface 761 being convex at a paraxial region thereof and animage-side surface 762 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element760 is made of plastic material and has the object-side surface 761 andthe image-side surface 762 being both aspheric.

The IR-cut filter 780 made of glass material is located between thesixth lens element 760 and the image plane 770, and will not affect afocal length of the image capturing optical lens system. The detailedoptical data of the 7th embodiment are shown in Table 13, and theaspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f = 3.75 mm, Fno = 2.25, HFOV = 37.6 deg.Surface Curvature Focal # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.230 2 Lens 1 1.551 (ASP)0.432 Plastic 1.544 55.9 3.47 3 7.794 (ASP) 0.078 4 Stop Plano 0.154 5Lens 2 −5.031 (ASP) 0.250 Plastic 1.640 23.3 −4.99 6 8.923 (ASP) 0.178 7Lens 3 3.714 (ASP) 0.514 Plastic 1.544 55.9 5.81 8 −20.315 (ASP) 0.522 9Lens 4 −1.856 (ASP) 0.572 Plastic 1.544 55.9 2.76 10 −0.920 (ASP) 0.03911 Lens 5 −4.324 (ASP) 0.318 Plastic 1.640 23.3 −17.02 12 −7.378 (ASP)0.086 13 Lens 6 4.222 (ASP) 0.472 Plastic 1.535 56.3 −2.57 14 0.996(ASP) 0.700 15 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 16 Plano0.263 17 Image Plano — Note: Reference wavelength (d-line) is 587.6 nm.Half of the diameter of the stop at Surface 4 is 0.82 mm.

TABLE 14 Aspheric Coefficients Surface # 2 3 5 6 7 8 k= −4.4079E−02 5.0000E+01 −1.0643E+00  −8.4921E+01 −1.3118E+00  1.0000E+00 A4=1.7490E−02 9.4783E−04 2.2373E−02 −4.9248E−02 −2.3211E−01 −1.1809E−01 A6=4.9271E−03 5.8422E−02 2.4605E−01  4.5161E−01  2.6588E−01 −1.7947E−02 A8=1.2641E−01 −2.9751E−01  −9.9335E−01  −1.0749E+00 −4.8494E−01  1.8494E−02A10= −5.1819E−01  6.3338E−01 2.0612E+00  1.7513E+00  6.2343E−01−2.3733E−03 A12= 9.3670E−01 −8.8581E−01  −2.6879E+00  −1.7291E+00−4.7955E−01  3.4599E−03 A14= −6.4751E−01  2.6447E−01 1.2659E+00 7.3759E−01  1.5910E−01 — Surface # 9 10 11 12 13 14 k= −5.7148E−01−1.0341E+00  −1.2747E+00 −8.2998E+00 −8.4741E+01 −5.1944E+00 A4=−4.0590E−02 1.2497E−01 −9.6189E−03 −2.0558E−02 −1.5776E−01 −1.3667E−01A6= −1.2965E−01 −2.0774E−01  −6.6101E−03 −3.2392E−03 −9.1813E−03 7.4540E−02 A8= −6.9615E−03 1.0877E−01 −1.9492E−03 −8.0848E−04 9.8789E−02 −2.8848E−02 A10=  2.6027E−01 2.0113E−02 −8.6543E−04−3.8551E−05 −7.7556E−02  7.2957E−03 A12= −1.7903E−01 −1.9185E−02 −5.6726E−05  8.0891E−05  2.7755E−02 −1.2091E−03 A14=  3.5718E−022.3228E−03 — — −4.7500E−03  1.1933E−04 A16= — — — —  3.1387E−04−5.2507E−06

In the image capturing optical lens system according to the 7thembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment. Moreover, these parameterscan be calculated from Table 13 and Table 14 as the following values andsatisfy the following relationships:

f (mm) 3.75 R12/f2 −0.20 Fno 2.25 f/f4 1.36 HFOV (deg.) 37.6 f/f5 −0.22(V2 + V5)/V1 0.83 (|f/f5| + |f/f6|)/(f/f4) 1.23 V5/V6 0.414 CT2/tan(α)(mm) 0.07 CT5/CT6 0.67 BFL/Td 0.31 (R1 + R2)/(R1− R2) −1.50 ImgH/f 0.782(R9 − R10)/(R9 + R10) −0.26 TTL/ImgH 1.61

8th Embodiment

FIG. 15 is a schematic view of an image capturing optical lens systemaccording to the 8th embodiment of the present disclosure. FIG. 16 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 8thembodiment. In FIG. 15, the image capturing optical lens systemincludes, in order from an object side to an image side, an aperturestop 800, a first lens element 810, a second lens element 820, a thirdlens element 830, a fourth lens element 840, a fifth lens element 850, asixth lens element 860, an IR-cut filter 880, an image plane 870, and animage sensor 890.

The first lens element 810 with positive refractive power has anobject-side surface 811 being convex at a paraxial region thereof and animage-side surface 812 being concave at a paraxial region thereof. Thefirst lens element 810 is made of plastic material and has theobject-side surface 811 and the image-side surface 812 being bothaspheric.

The second lens element 820 with negative refractive power has anobject-side surface 821 being convex at a paraxial region thereof and animage-side surface 822 being concave at a paraxial region thereof. Thesecond lens element 820 is made of plastic material and has theobject-side surface 821 and the image-side surface 822 being bothaspheric.

The third lens element 830 with positive refractive power has anobject-side surface 831 being convex at a paraxial region thereof and animage-side surface 832 being convex at a paraxial region thereof. Thethird lens element 830 is made of plastic material and has theobject-side surface 831 and the image-side surface 832 being bothaspheric.

The fourth lens element 840 with positive refractive power has anobject-side surface 841 being convex at a paraxial region thereof and animage-side surface 842 being convex at a paraxial region thereof. Thefourth lens element 840 is made of plastic material and has theobject-side surface 841 and the image-side surface 842 being bothaspheric.

The fifth lens element 850 with negative refractive power has anobject-side surface 851 being concave at a paraxial region thereof andan image-side surface 852 being convex at a paraxial region thereof. Thefifth lens element 850 is made of plastic material and has theobject-side surface 851 and the image-side surface 852 being bothaspheric.

The sixth lens element 860 with positive refractive power has anobject-side surface 861 being convex at a paraxial region thereof and animage-side surface 862 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element860 is made of plastic material and has the object-side surface 861 andthe image-side surface 862 being both aspheric.

The IR-cut filter 880 made of glass material is located between thesixth lens element 860 and the image plane 870, and will not affect afocal length of the image capturing optical lens system.

The detailed optical data of the 8th embodiment are shown in Table 15,and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f = 3.75 mm, Fno = 2.22, HFOV = 37.6 deg.Surface Curvature Focal # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.230 2 Lens 1 1.634 (ASP)0.422 Plastic 1.544 55.9 3.69 3 7.993 (ASP) 0.133 4 Lens 2 2.740 (ASP)0.240 Plastic 1.640 23.3 −7.05 5 1.646 (ASP) 0.230 6 Lens 3 14.616 (ASP)0.250 Plastic 1.544 55.9 23.00 7 −86.443 (ASP) 0.156 8 Lens 4 100.000(ASP) 0.312 Plastic 1.544 55.9 6.09 9 −3.424 (ASP) 0.391 10 Lens 5−0.788 (ASP) 0.280 Plastic 1.640 23.3 −9.25 11 −1.036 (ASP) 0.123 12Lens 6 2.018 (ASP) 1.116 Plastic 1.544 55.9 503.03 13 1.636 (ASP) 0.70014 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.226 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 16 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= −2.7168E−02−6.8822E+01 −3.2439E+01  −8.8020E+00 −8.9828E+01  1.0000E+00 A4= 4.4163E−03 −8.0677E−02 −1.2812E−01  −1.9572E−02 −2.3676E−02 −4.1131E−02A6=  2.3039E−02  1.4665E−01 8.7887E−02  9.9597E−03 −2.1991E−02−2.0921E−02 A8= −1.7095E−02 −1.1445E−01 1.9406E−02  1.1952E−01 2.7782E−02 −2.2773E−03 A10= −2.9339E−02 −7.0578E−03 −1.3469E−01 −2.5090E−01  1.7926E−03  4.3882E−02 A12=  9.9529E−02  4.2875E−024.4865E−02  1.5331E−01 −5.6449E−05 −1.1873E−05 A14= −7.7512E−02−3.6527E−02 1.5158E−02 −2.4257E−02 — — Surface # 8 9 10 11 12 13 k=−3.2429E+00 3.3303E+00 −3.3077E+00 −8.0426E−01 −1.9814E+01 −7.3813E+00A4= −1.0146E−01 −4.5648E−02  −8.1619E−02  1.1978E−01 −1.2012E−01−5.1343E−02 A6= −3.9893E−02 −4.2874E−02  −2.0633E−02 −2.6545E−02 6.7400E−02  1.9885E−02 A8=  2.2123E−02 1.9586E−02  1.2212E−01 2.4245E−02 −4.1778E−02 −7.8640E−03 A10= −1.8964E−02 3.3795E−02−4.4025E−02  8.1061E−03  2.1037E−02  2.1725E−03 A12=  2.0746E−02−2.3182E−03  −7.9093E−03 −3.4715E−03 −5.8863E−03 −3.8311E−04 A14= 6.1208E−02 1.1093E−03  2.5948E−03 −2.7535E−03  8.2483E−04  3.8278E−05A16= −4.8470E−02 —  4.5007E−04  7.1272E−04 −4.5893E−05 −1.6059E−06

In the image capturing optical lens system according to the 8thembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment. Moreover, these parameterscan be calculated from Table 15 and Table 16 as the following values andsatisfy the following relationships:

f (mm) 3.75 R12/f2 −0.23 Fno 2.22 f/f4 0.62 HFOV (deg.) 37.6 f/f5 −0.40(V2 + V5)/V1 0.83 (|f/f5| + |f/f6|)/(f/f4) 0.67 V5/V6 0.417 CT2/tan(α)(mm) 0.06 CT5/CT6 0.25 BFL/Td 0.29 (R1 + R2)/(R1 − R2) −1.51 ImgH/f0.783 (R9 − R10)/(R9 + R10) −0.14 TTL/ImgH 1.61

9th Embodiment

FIG. 17 is a schematic view of an image capturing optical lens systemaccording to the 9th embodiment of the present disclosure. FIG. 18 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image capturing optical lens system according to the 9thembodiment. In FIG. 17, the image capturing optical lens systemincludes, in order from an object side to an image side, an aperturestop 900, a first lens element 910, a second lens element 920, a thirdlens element 930, a fourth lens element 940, a fifth lens element 950, asixth lens element 960, an IR-cut filter 980, an image plane 970, and animage sensor 990.

The first lens element 910 with positive refractive power has anobject-side surface 911 being convex at a paraxial region thereof and animage-side surface 912 being concave at a paraxial region thereof. Thefirst lens element 910 is made of plastic material and has theobject-side surface 911 and the image-side surface 912 being bothaspheric.

The second lens element 920 with negative refractive power has anobject-side surface 921 being concave at a paraxial region thereof andan image-side surface 922 being concave at a paraxial region thereof.The second lens element 920 is made of plastic material and has theobject-side surface 921 and the image-side surface 922 being bothaspheric.

The third lens element 930 with positive refractive power has anobject-side surface 931 being convex at a paraxial region thereof and animage-side surface 932 being concave at a paraxial region thereof. Thethird lens element 930 is made of plastic material and has theobject-side surface 931 and the image-side surface 932 being bothaspheric.

The fourth lens element 940 with positive refractive power has anobject-side surface 941 being concave at a paraxial region thereof andan image-side surface 942 being convex at a paraxial region thereof. Thefourth lens element 940 is made of plastic material and has theobject-side surface 941 and the image-side surface 942 being bothaspheric.

The fifth lens element 950 with negative refractive power has anobject-side surface 951 being concave at a paraxial region thereof andan image-side surface 952 being convex at a paraxial region thereof. Thefifth lens element 950 is made of plastic material and has theobject-side surface 951 and the image-side surface 952 being bothaspheric.

The sixth lens element 960 with negative refractive power has anobject-side surface 961 being concave at a paraxial region thereof andan image-side surface 962 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element960 is made of plastic material and has the object-side surface 961 andthe image-side surface 962 being both aspheric.

The IR-cut filter 980 made of glass material is located between thesixth lens element 960 and the image plane 970, and will not affect afocal length of the image capturing optical lens system.

The detailed optical data of the 9th embodiment are shown in Table 17,and the aspheric surface data are shown in Table 18 below.

TABLE 17 9th Embodiment f = 3.75 mm, Fno = 2.25, HFOV = 37.3 deg.Surface Curvature Focal # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.253 2 Lens 1 1.472 (ASP)0.467 Plastic 1.544 55.9 3.00 3 13.066 (ASP) 0.198 4 Lens 2 −5.659 (ASP)0.250 Plastic 1.650 21.4 −5.41 5 9.448 (ASP) 0.209 6 Lens 3 5.478 (ASP)0.478 Plastic 1.544 55.9 11.19 7 53.006 (ASP) 0.364 8 Lens 4 −2.418(ASP) 0.453 Plastic 1.544 55.9 3.22 9 −1.083 (ASP) 0.070 10 Lens 5−3.228 (ASP) 0.394 Plastic 1.583 30.2 −75.24 11 −3.641 (ASP) 0.247 12Lens 6 −4.543 (ASP) 0.579 Plastic 1.530 55.8 −2.39 13 1.829 (ASP) 0.40014 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.305 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 18 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= −1.1941E−01 2.6303E+00 −1.0000E+00  −1.4392E+01 −7.3165E+00 −2.0000E+01 A4=6.6018E−03 3.8742E−03 6.5278E−03 −4.8042E−02 −2.3979E−01 −1.3984E−01 A6=4.2878E−02 5.6943E−02 2.7610E−01  4.5649E−01  2.5499E−01 −2.3033E−02 A8=5.1710E−02 −3.0745E−01  −1.0040E+00  −1.0431E+00 −4.7326E−01  3.4853E−02A10= −4.7087E−01  6.9641E−01 2.1186E+00  1.7683E+00  6.5137E−01−1.8006E−03 A12= 9.3977E−01 −8.8727E−01  −2.6876E+00  −1.7285E+00−4.7999E−01 −1.6335E−03 A14= −6.4751E−01  2.6447E−01 1.2659E+00 7.3759E−01  1.5835E−01 — Surface # 8 9 10 11 12 13 k= −5.6564E−01−1.0158E+00  −2.4737E+01 −1.5837E+01 −5.0000E+01 −3.4499E+00 A4=−5.3796E−02 9.5124E−02 −3.6509E−02 −2.2990E−02 −1.4338E−01 −1.5150E−01A6= −1.0996E−01 −1.9462E−01  −6.7899E−03  8.0124E−04 −1.0711E−02 7.9095E−02 A8= −8.8751E−03 1.2004E−01  1.0570E−03 −5.6126E−04 9.8961E−02 −2.9464E−02 A10=  2.5706E−01 2.3369E−02 −1.8894E−03 3.4463E−04 −7.7641E−02  7.2539E−03 A12= −1.8086E−01 −1.9355E−02  2.5699E−05 −1.9140E−04  2.7727E−02 −1.2081E−03 A14=  3.5756E−021.0974E−03 — — −4.7428E−03  1.2009E−04 A16= — — — —  3.1657E−04−5.1210E−06

In the image capturing optical lens system according to the 9thembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment. Moreover, these parameterscan be calculated from Table 17 and Table 18 as the following values andsatisfy the following relationships:

f (mm) 3.75 R12/f2 −0.34 Fno 2.25 f/f4 1.16 HFOV (deg.) 37.3 f/f5 −0.05(V2 + V5)/V1 0.92 (|f/f5| + |f/f6|)/(f/f4) 1.39 V5/V6 0.541 CT2/tan(α)(mm) 0.05 CT5/CT6 0.68 BFL/Td 0.23 (R1 + R2)/(R1 − R2) −1.25 ImgH/f0.782 (R9 − R10)/(R9 + R10) −0.06 TTL/ImgH 1.55

10th Embodiment

FIG. 19 is a schematic view of an image capturing optical lens systemaccording to the 10th embodiment of the present disclosure. FIG. 20shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 10th embodiment. In FIG. 19, the image capturing optical lens systemincludes, in order from an object side to an image side, an aperturestop 1000, a first lens element 1010, a second lens element 1020, athird lens element 1030, a fourth lens element 1040, a fifth lenselement 1050, a sixth lens element 1060, an IR-cut filter 1080, an imageplane 1070, and an image sensor 1090.

The first lens element 1010 with positive refractive power has anobject-side surface 1011 being convex at a paraxial region thereof andan image-side surface 1012 being concave at a paraxial region thereof.The first lens element 1010 is made of plastic material and has theobject-side surface 1011 and the image-side surface 1012 being bothaspheric.

The second lens element 1020 with negative refractive power has anobject-side surface 1021 being concave at a paraxial region thereof andan image-side surface 1022 being concave at a paraxial region thereof.The second lens element 1020 is made of plastic material and has theobject-side surface 1021 and the image-side surface 1022 being bothaspheric.

The third lens element 1030 with positive refractive power has anobject-side surface 1031 being convex at a paraxial region thereof andan image-side surface 1032 being concave at a paraxial region thereof.The third lens element 1030 is made of plastic material and has theobject-side surface 1031 and the image-side surface 1032 being bothaspheric.

The fourth lens element 1040 with positive refractive power has anobject-side surface 1041 being concave at a paraxial region thereof andan image-side surface 1042 being convex at a paraxial region thereof.The fourth lens element 1040 is made of plastic material and has theobject-side surface 1041 and the image-side surface 1042 being bothaspheric.

The fifth lens element 1050 with negative refractive power has anobject-side surface 1051 being concave at a paraxial region thereof andan image-side surface 1052 being convex at a paraxial region thereof.The fifth lens element 1050 is made of plastic material and has theobject-side surface 1051 and the image-side surface 1052 being bothaspheric.

The sixth lens element 1060 with negative refractive power has anobject-side surface 1061 being convex at a paraxial region thereof andan image-side surface 1062 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element1060 is made of plastic material and has the object-side surface 1061and the image-side surface 1062 being both aspheric.

The IR-cut filter 1080 made of glass material is located between thesixth lens element 1060 and the image plane 1070, and will not affect afocal length of the image capturing optical lens system.

The detailed optical data of the 10th embodiment are shown in Table 19,and the aspheric surface data are shown in Table 20 below.

TABLE 19 10th Embodiment f = 3.59 mm, Fno = 2.25, HFOV = 38.5 deg.Surface Curvature Focal # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.217 2 Lens 1 1.555 (ASP)0.434 Plastic 1.544 55.9 3.03 3 25.036 (ASP) 0.159 4 Lens 2 −8.152 (ASP)0.250 Plastic 1.650 21.4 −6.15 5 7.921 (ASP) 0.252 6 Lens 3 6.513 (ASP)0.408 Plastic 1.544 55.9 43.50 7 8.787 (ASP) 0.259 8 Lens 4 −3.391 (ASP)0.510 Plastic 1.544 55.9 2.87 9 −1.125 (ASP) 0.159 10 Lens 5 −2.520(ASP) 0.601 Plastic 1.544 55.9 −7.62 11 −6.969 (ASP) 0.150 12 Lens 62.819 (ASP) 0.552 Plastic 1.614 25.6 −3.65 13 1.156 (ASP) 0.450 14IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.250 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 20 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= −1.1562E−01 4.4393E+01 −9.9274E−01 −1.6521E+01 −1.7908E+01  9.0788E−01 A4=6.1168E−03 3.6207E−03 −5.2100E−03 −5.0513E−02 −2.4346E−01 −1.4692E−01A6= 4.8562E−02 8.4346E−02  2.8445E−01  4.3775E−01  2.4538E−01−2.8027E−02 A8= 5.7173E−02 −3.2403E−01  −1.0170E+00 −1.0549E+00−4.7435E−01  3.4510E−02 A10= −4.8003E−01  6.8018E−01  2.1072E+00 1.7532E+00  6.4246E−01 −2.2892E−03 A12= 9.3889E−01 −8.8725E−01 −2.6876E+00 −1.7284E+00 −4.8003E−01  1.9669E−03 A14= −6.4751E−01 2.6447E−01  1.2659E+00  7.3759E−01  1.5835E−01 — Surface # 8 9 10 11 1213 k= −2.4468E+00 −1.0234E+00  −3.2379E+01 −8.2036E+01 −3.7322E+01−4.8110E+00 A4= −4.3481E−02 9.7231E−02 −2.1372E−02 −1.2083E−02−1.5853E−01 −1.4110E−01 A6= −1.0331E−01 −1.8397E−01  −1.7901E−04−3.0074E−03 −1.1837E−02  7.7668E−02 A8= −8.7354E−03 1.2484E−01 3.6449E−03 −1.3178E−03  9.9016E−02 −2.9445E−02 A10=  2.5647E−012.3661E−02 −2.7268E−03  5.0464E−04 −7.7656E−02  7.2684E−03 A12=−1.8137E−01 −2.0200E−02  −5.4706E−04 −9.1291E−05  2.7743E−02 −1.2048E−03A14=  3.5075E−02 9.3894E−05 — — −4.7398E−03  1.2011E−04 A16= — — — — 3.1460E−04 −5.1835E−06

In the image capturing optical lens system according to the 10thembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 10th embodiment. Moreover, these parameterscan be calculated from Table 19 and Table 20 as the following values andsatisfy the following relationships:

f (mm) 3.59 R12/f2 −0.19 Fno 2.25 f/f4 1.25 HFOV (deg.) 38.5 f/f5 −0.47(V2 + V5)/V1 1.38 (|f/f5| + |f/f6|)/(f/f4) 1.16 V5/V6 2.184 CT2/tan(α)(mm) 0.07 CT5/CT6 1.09 BFL/Td 0.23 (R1 + R2)/(R1 − R2) −1.13 ImgH/f0.816 (R9 − R10)/(R9 + R10) −0.47 TTL/ImgH 1.56

11th Embodiment

FIG. 21 is a schematic view of an image capturing optical lens systemaccording to the 11th embodiment of the present disclosure. FIG. 22shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing optical lens system according tothe 11th embodiment. In FIG. 21, the image capturing optical lens systemincludes, in order from an object side to an image side, a first lenselement 1110, an aperture stop 1100, a second lens element 1120, a thirdlens element 1130, a fourth lens element 1140, a fifth lens element1150, a sixth lens element 1160, an IR-cut filter 1180, an image plane1170, and an image sensor 1190.

The first lens element 1110 with positive refractive power has anobject-side surface 1111 being convex at a paraxial region thereof andan image-side surface 1112 being concave at a paraxial region thereof.The first lens element 1110 is made of plastic material and has theobject-side surface 1111 and the image-side surface 1112 being bothaspheric.

The second lens element 1120 with negative refractive power has anobject-side surface 1121 being convex at a paraxial region thereof andan image-side surface 1122 being concave at a paraxial region thereof.The second lens element 1120 is made of plastic material and has theobject-side surface 1121 and the image-side surface 1122 being bothaspheric.

The third lens element 1130 with positive refractive power has anobject-side surface 1131 being convex at a paraxial region thereof andan image-side surface 1132 being concave at a paraxial region thereof.The third lens element 1130 is made of plastic material and has theobject-side surface 1131 and the image-side surface 1132 being bothaspheric.

The fourth lens element 1140 with positive refractive power has anobject-side surface 1141 being concave at a paraxial region thereof andan image-side surface 1142 being convex at a paraxial region thereof.The fourth lens element 1140 is made of plastic material and has theobject-side surface 1141 and the image-side surface 1142 being bothaspheric.

The fifth lens element 1150 with negative refractive power has anobject-side surface 1151 being concave at a paraxial region thereof andan image-side surface 1152 being convex at a paraxial region thereof.The fifth lens element 1150 is made of plastic material and has theobject-side surface 1151 and the image-side surface 1152 being bothaspheric.

The sixth lens element 1160 with negative refractive power has anobject-side surface 1161 being convex at a paraxial region thereof andan image-side surface 1162 changing from concave at a paraxial regionthereof to convex at a peripheral region thereof. The sixth lens element1160 is made of plastic material and has the object-side surface 1161and the image-side surface 1162 being both aspheric.

The IR-cut filter 1180 made of glass material is located between thesixth lens element 1160 and the image plane 1170, and will not affect afocal length of the image capturing optical lens system.

The detailed optical data of the 11th embodiment are shown in Table 21,and the aspheric surface data are shown in Table 22 below.

TABLE 21 11th Embodiment f = 3.58 mm, Fno = 2.60, HFOV = 38.6 deg.Surface Curvature Focal # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Lens 1 1.784 (ASP) 0.388 Plastic 1.535 56.34.02 2 9.697 (ASP) 0.050 3 Ape. Stop Plano 0.235 4 Lens 2 34.444 (ASP)0.250 Plastic 1.650 21.4 −6.75 5 3.880 (ASP) 0.191 6 Lens 3 3.110 (ASP)0.430 Plastic 1.535 56.3 13.56 7 5.185 (ASP) 0.295 8 Lens 4 −3.224 (ASP)0.470 Plastic 1.544 55.9 3.21 9 −1.191 (ASP) 0.131 10 Lens 5 −3.690(ASP) 0.694 Plastic 1.614 25.6 −67.37 11 −4.341 (ASP) 0.283 12 Lens 62.689 (ASP) 0.517 Plastic 1.614 25.6 −3.02 13 1.018 (ASP) 0.450 14IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.257 16 ImagePlano — Note: Reference wavelength (d-line) is 587.6 nm.

TABLE 22 Aspheric Coefficients Surface # 1 2 4 5 6 7 k= −7.6470E−02 3.1937E+01 −5.0000E+01 −2.5519E+01 −1.2297E+01 −1.9347E+01 A4=7.1731E−03 1.2153E−02 −2.3455E−02 −5.4475E−02 −2.3603E−01 −1.5498E−01A6= 4.4148E−02 6.8468E−02  2.4633E−01  4.1900E−01  2.5919E−01−4.0139E−02 A8= 5.9718E−02 −3.9910E−01  −1.0863E+00 −1.0778E+00−4.6874E−01  2.2970E−02 A10= −5.2513E−01  7.2459E−01  2.1056E+00 1.7171E+00  6.1983E−01 −9.1050E−03 A12= 9.3889E−01 −8.8725E−01 −2.6876E+00 −1.7284E+00 −4.8001E−01 −2.9391E−04 A14= −6.4751E−01 2.6447E−01  1.2659E+00  7.3759E−01  1.5835E−01 — A16= — — — — — —Surface # 8 9 10 11 12 13 k= −1.4331E+00 −1.0000E+00 −8.3901E+01−2.6945E+01 −3.4415E+01 −4.3565E+00 A4= −4.5095E−02  8.0598E−02−1.6846E−03  6.7393E−03 −1.6535E−01 −1.4409E−01 A6= −9.9740E−02−1.8572E−01 −3.6514E−03 −6.8024E−03 −1.3688E−02  7.9199E−02 A8=−1.0534E−02  1.2581E−01  5.1537E−04 −1.7253E−03  9.9446E−02 −2.9673E−02A10=  2.5445E−01  2.4461E−02 −4.5088E−03  8.2334E−04 −7.7462E−02 7.2665E−03 A12= −1.8191E−01 −1.9951E−02  5.8669E−04 −5.6815E−05 2.7782E−02 −1.2029E−03 A14=  3.6895E−02 −6.4052E−05 — — −4.7393E−03 1.2052E−04 A16= — — — —  3.1108E−04 −5.2565E−06

In the image capturing optical lens system according to the 11thembodiment, the definitions of these parameters shown in the followingtable are the same as those stated in the 1st embodiment withcorresponding values for the 11th embodiment. Moreover, these parameterscan be calculated from Table 21 and Table 22 as the following values andsatisfy the following relationships:

f (mm) 3.58 R12/f2 −0.15 Fno 2.60 f/f4 1.11 HFOV (deg.) 38.6 f/f5 −0.05(V2 + V5)/V1 0.83 (|f/f5| + |f/f6|)/(f/f4) 1.11 V5/V6 1.000 CT2/tan(α)(mm) 0.08 CT5/CT6 1.34 BFL/Td 0.22 (R1 + R2)/(R1 − R2) −1.45 ImgH/f0.820 (R9 − R10)/(R9 + R10) −0.08 TTL/ImgH 1.63

It will be apparent to those skilled in the art that variousmodifications and variations can be made to the structure of the presentdisclosure without departing from the scope or spirit of the disclosure.In view of the foregoing, it is intended that the present disclosurecover modifications and variations of this disclosure provided they fallwithin the scope of the following claims.

What is claimed is:
 1. An image capturing optical lens system comprisingsix lens elements, the six lens elements being, in order from an objectside to an image side: a first lens element, a second lens element, athird lens element, a fourth lens element, a fifth lens element and asixth lens element; wherein each of the six lens elements has anobject-side surface facing towards the object side and an image-sidesurface facing towards the image side; wherein the second lens elementhas negative refractive power; the third lens element has the image-sidesurface being convex in a paraxial region thereof; at least one of theobject-side surface and the image-side surface of the fifth lens elementis aspheric; the sixth lens element with positive refractive power hasthe object-side surface being convex in a paraxial region thereof, theimage-side surface of the sixth lens element is concave in a paraxialregion thereof and comprises at least one convex shape in an off-axisregion thereof; wherein there is an air gap between each of adjacentlens elements of the six lens elements; an Abbe number of the fifth lenselement is V5, an Abbe number of the sixth lens element is V6, and thefollowing relationship is satisfied:0.20<V5/V6<0.70.
 2. The image capturing optical lens system of claim 1,wherein the third lens element with positive refractive power has theobject-side surface being convex in a paraxial region thereof.
 3. Theimage capturing optical lens system of claim 2, wherein the fourth lenselement with positive refractive power has the object-side surface beingconvex in a paraxial region thereof and the image-side surface beingconvex in a paraxial region thereof.
 4. The image capturing optical lenssystem of claim 1, wherein the third lens element has positiverefractive power, the fourth lens element has positive refractive power,the fifth lens element has negative refractive power.
 5. The imagecapturing optical lens system of claim 1, wherein the first lens elementhas the object-side surface being convex in a paraxial region thereof;the fifth lens element has the object-side surface being concave in aparaxial region thereof.
 6. The image capturing optical lens system ofclaim 1, wherein a focal length of the image capturing optical lenssystem is f, a focal length of the fourth lens element is f4, and thefollowing relationship is satisfied:0.6<f/f4<1.8.
 7. The image capturing optical lens system of claim 1,wherein a focal length of the second lens element is f2, a curvatureradius of the image-side surface of the sixth lens element is R12, andthe following relationship is satisfied:−1.0<R12/f2<0.
 8. The image capturing optical lens system of claim 1,wherein an axial distance between the image-side surface of the sixthlens element and an image plane is BFL, an axial distance between theobject-side surface of the first lens element and the image-side surfaceof the sixth lens element is Td, and the following relationship issatisfied:0.15<BFL/Td<0.40.
 9. The image capturing optical lens system of claim 1,wherein a focal length of the image capturing optical lens system is f,a focal length of the fourth lens element is f4, a focal length of thefifth lens element is f5, a focal length of the sixth lens element isf6, and the following relationship is satisfied:0.67≤(|f/f5|+|f/f6|)/(f/f4)<1.5.
 10. The image capturing optical lenssystem of claim 1, wherein a maximum image height of the image capturingoptical lens system is ImgH, a focal length of the image capturingoptical lens system is f, and the following relationship is satisfied:0.72<ImgH/f<1.0.
 11. The image capturing optical lens system of claim 1,wherein a central thickness of the second lens element is CT2, an anglebetween a tangent of an inflection point on the image-side surface ofthe sixth lens element and an optical axis is α, and the followingrelationship is satisfied:0 mm<CT2/tan(α)<0.30 mm.
 12. The image capturing optical lens system ofclaim 1, wherein a central thickness of the sixth lens element isgreater than a central thickness of the second lens element.
 13. Theimage capturing optical lens system of claim 1, wherein a centralthickness of the fourth lens element is greater than a central thicknessof the second lens element.
 14. An image capturing optical lens systemcomprising six lens elements, the six lens elements being, in order froman object side to an image side: a first lens element, a second lenselement, a third lens element, a fourth lens element, a fifth lenselement and a sixth lens element; wherein each of the six lens elementshas an object-side surface facing towards the object side and animage-side surface facing towards the image side; wherein the image-sidesurface of the sixth lens element is concave in a paraxial regionthereof and comprises at least one convex shape in an off-axis regionthereof, and at least one of the object-side surface and the image-sidesurface of the sixth lens element is aspheric; wherein an Abbe number ofthe fifth lens element is V5, an Abbe number of the sixth lens elementis V6, a central thickness of the fifth lens element is CT5, a centralthickness of the sixth lens element is CT6, and the followingrelationships are satisfied:0.20<V5/V6<0.70; and0.10<CT5/CT6<0.50.
 15. The image capturing optical lens system of claim14, wherein the fourth lens element with positive refractive power hasthe object-side surface being convex in a paraxial region thereof andthe image-side surface being convex in a paraxial region thereof. 16.The image capturing optical lens system of claim 14, wherein the thirdlens element has the object-side surface being convex in a paraxialregion thereof; the sixth lens element has the object-side surface beingconvex in a paraxial region thereof.
 17. The image capturing opticallens system of claim 14, wherein the first lens element has theobject-side surface being convex in a paraxial region thereof; the fifthlens element has the object-side surface being concave in a paraxialregion thereof.
 18. The image capturing optical lens system of claim 14,wherein a focal length of the second lens element is f2, a curvatureradius of the image-side surface of the sixth lens element is R12, andthe following relationship is satisfied:−1.0<R12/f2<0.
 19. The image capturing optical lens system of claim 14,wherein a maximum image height of the image capturing optical lenssystem is ImgH, a focal length of the image capturing optical lenssystem is f, and the following relationship is satisfied:0.72<ImgH/f<1.0.
 20. The image capturing optical lens system of claim14, wherein a focal length of the image capturing optical lens system isf, a focal length of the fifth lens element is f5, and the followingrelationship is satisfied:−1.20<f/f5<−0.20.
 21. The image capturing optical lens system of claim14, wherein a focal length of the image capturing optical lens system isf, a focal length of the fourth lens element is f4, and the followingrelationship is satisfied:0.6<f/f4≤1.18.
 22. The image capturing optical lens system of claim 14,wherein a focal length of the image capturing optical lens system is f,a focal length of the fourth lens element is f4, a focal length of thefifth lens element is f5, a focal length of the sixth lens element isf6, and the following relationship is satisfied:0.3<(|f/f5|+|f/f6|)/(f/f4)<1.5.
 23. The image capturing optical lenssystem of claim 14, wherein a maximum image height of the imagecapturing optical lens system is ImgH, an axial distance between theobject-side surface of the first lens element and an image plane is TTL,and the following relationship is satisfied:TTL/ImgH<1.8.
 24. The image capturing optical lens system of claim 14,wherein curvature radii of the object-side surface and the image-sidesurface of the second lens element have the same sign.